Adobe surprised everyone with a Photoshop for iPad announcement when they said it was "full Photoshop." Creatives were elated, but then later disappointed when that apparently meant the algorithms were the same as on desktop (good news), but the features were not (not so good). Major features such as Curves were not even available at launch, but today, at least some of that has changed.
To be fair, Adobe has to ride a fine line of giving its customers access to the latest and greatest and also holding back on releases until a certain level of completion, if you will, is present within a new application. If they release a new product too early, they risk users being upset by the lack of features within that product — customers who may very well be alienated after being put off by various omissions in the product. In reality, those aren't exactly omissions, but rather features that are likely always being planned for the future. But release too late, and Adobe's customers feel the product lineup beginning to go stale. And the later they release a product (with complete features or not), the longer Adobe's users have to wait until they can use the features that are in fact ready.
Of course, Adobe's latest subscription model switch in the last few years has only added to this pressure. This is evident in the rise of a number of competitors that offer perpetual software licenses the way Adobe used to, where you pay one time for an application, and then again (sometimes at a reduced price) for upgrades in the future without having to pay monthly. Generally speaking, these business models result in a lower long-term cost for perpetual licenses and a lower short-term cost for the subscription licenses. And now, with the higher long-term cost of Adobe's subscription-only options, its customers expect quite a bit more of the company (to a large degree, rightly so).
One right move on Adobe's part, at least, as been to include Photoshop for iPad in a package with any subscription that already includes Photoshop on the desktop. Thankfully, that means anyone likely to use already be using Photoshop now has the iPad version (complete or not) for no additional cost to them. And today, that fact offers more value with Adobe bringing Curves to Photoshop for iPad.
In a welcome move for editors used to the creature comforts of something like a Wacom tablet, Apple Pencil pressure sensitivity is also now offered in Photoshop for iPad, making the application that much more useful on the go when your Wacom isn't handy.
Today's Photoshop for iPad updates are available immediately through the App Store. There is currently no way to get the application separately for a lower price, but it is included with other Creative Cloud subscriptions that include the standard Photoshop CC.